Full Disclosure mailing list archives

Re: McAfee Virus Scan for Linux and Unix v5.10.0 Local Buffer Overflow


From: "Joey Mengele" <joey.mengele () hushmail com>
Date: Wed, 15 Aug 2007 13:34:50 -0400

You are playing handpuppet of the jackass, actually. Check PATH_MAX 
in the Linux Kernel.

J

On Wed, 15 Aug 2007 12:53:18 -0400 monikerd <monikerd () gmail com> 
wrote:
Joey Mengele wrote:
Where does security come into play here? This is a local crash 
in a 
non setuid binary. I would like to hear your remote exploitation 

scenario. Or perhaps your local privilege escalation scenario?

J

  
I'll play advocate of the devil then. Imagine a wiki running on a 
webserver,

that allows anybody to create new topics which end up in
/articles/[Topic].txt
with sufficient .htaccess stuff in /articles to twart most usual 
attacks ..


If you could create an arbitrary long topic, then you *might*
be able to execute some code, when some cronjob would scan the 
drive
and come across the file?

creating files is a different privilege than  running code. Hence 
imho
it's not a bogus advisory.


another possibility would be to create an archive that extracts an
incredibly
long filename perhaps? scanning an archive before/after it's 
extracted
is a pretty common event i guess.

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